TY - SER AU - Osman,Eman A. AU - El-Akkad,Salwa A.F. AU - Abd-El-Ghafour,Seham E. TI - Influence of growth medium on the pathogenicity of some isolates of Rhizoctonia spp. on cotton seedlings KW - Cotton KW - Diseases and pests KW - Seedlings KW - Rhizoctonia N1 - Includes references N2 - The nutritional status of seven multinucleate isolates of Rhizactania solani (AG4) and one binucleate isolate of Rhizoctonia was varied by growing the isolates on four growth media with variable nutritional values (water agar, potato dextrose agar, Czapeck's-dox agar, and sorghum extract agar). Effect of growth medium on pathogenicity of the isolates, on cotton cultivars Giza 80 and Giza 89, was evaluated under laboratory and greenhouse conditions. Percentage of seed germination and radicle length were used as criteria for judging pathogenicity of the isolates under laboratory conditions UR - http://nile.enal.sci.eg/EALE/2003/EJAR/8103/1/33.pdf ER -